Process of carroting hides and skins.



UNITED STATES PATENT oFFIoE.

CHARLES PICHARD AND EMILE PIOHARD, .OF PARIS, FRANCE.

PROCESS OF CARROTING HIDES AND SKINS.

Specification of'Letters Patent.

Patented Dec. 10, 1907.

Application filed July 16, 1907. Serial No. 384,077.

In Letters Patent No.. 846,944, dated March 12, 1907, which were granted to us heretofore, compressed air for spraying the carroting. liquid onto the hides and the hair of the same was used. Qom ressed air was used, first, to raise the hair by forcible impact, and, secondly, to carry the liquid carroting material down to the roots of the hair, whether intended for carroting or for dyeing.

By a number of experimental tests it was found that the compressed air can be advantageously replaced by any other suitable fluid under ressure, and more particularly by steam. he jet of liquid is applied at an acute angle to the hides and sklns so as to raise the hair and attack the roots by the vapors.

he apparatus which 1s shown and described in our prior patent-referred to is not changed at all, but simply a jet of steam is used instead of compressed air. The temperature and the pressure of the steam are varied in accordance with the kind of work that has to be done. The advantages of steam, however, consist in the fact that instead of carroting hides at ordinary temperature, they are treated at a higher temperature, and thereby the carroting liquid is introduced at nearly the tem erature of the steam, so that the -effect of t e same on the hides and skins is considerably enhanced.

Having thus described our invention, we

claim as new and desire to secure by Letters Patent:

1. The process herein described of carroting hides and skins, whichconsists in subjecting the hides and skins to the action of a jet of carrotlng liquid vaporized by steam so I that the hairs are raised and their roots exposed by the action of the spray of carroting iquid.

2. The process herein described of carrot ing hides and skins, which consists in subjecting the hides and skins to the action of a jet of carroting li uid sprayed under pressure of steam while fed in the direction of an acute angle to the hides or skins, so that the hairs are raised and their roots exposed by the action of the spray of oarroting liquid.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

' CHARLES PICHARD.

EMILE PICHARD.

Witnesses:

EMILE LEDRET,

H. O. COKE. 

